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Water Treatment, Water Infrastructure, Water Testing, Detection and Monitoring

Water Treatment, Water Infrastructure, Water Testing, Detection and Monitoring. Isabel C. Escobar, Chemical & Environmental Engineering April Ames, Public Health & Prevent Medicine Defne Apul , Civil Engineering Thomas Bridgeman, Environmental Sciences Daryl Dwyer, Environmental Sciences

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Water Treatment, Water Infrastructure, Water Testing, Detection and Monitoring

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  1. Water Treatment, Water Infrastructure, Water Testing, Detection and Monitoring Isabel C. Escobar, Chemical & Environmental Engineering April Ames, Public Health & Prevent Medicine DefneApul, Civil Engineering Thomas Bridgeman, Environmental Sciences Daryl Dwyer, Environmental Sciences CyndeeGruden, Civil Engineering Charles Lehnert, Corporate Relations Michael Valigosky, Public Health & Prevent Medicine

  2. Sedimentation ponds to improve water quality:Daryl Dwyer • Sedimentation Pond – For preliminary results after 2 months, estimations of the overall improvements in water quality on an annual basis = 10 tons (50 %) of phosphorus prevented from entering Lake Erie and 75 % of E. coli in Wolfe Creek prevented from entering beach waters • If scaled to Maumee River watershed this could prevent 1,000 tons (~50 % reduction) of phosphorus from entering Lake Erie which exceeds the target value of 37 % (Phosphorus Task Force II – Final Report) • For this to be effective in the Maumee River watershed we must implement sedimentation ponds in a variety of locations throughout the watershed Possible Locations for Future Implementation Flatrock Creek, Auglaize, OH Missionary Island, Waterville, OH **Chokepoints

  3. Current Water Treatment Techniques • Must use several methods in conjunction to eliminate both cells and toxins • Coagulation/flocculation/sedimentation are not enough • Activated carbon • Final treatment with chlorination • Pretreatment with an oxidant will kill the algae and release T&O compounds • The algae and T&O compounds can increase DBP production

  4. PolishingWater Treatment: Isabel Escobar • The application of activated carbon is one of the most efficient measure for dissolved toxin removal • Oxidation & disinfection: • Assessment of the influence of water qualityparameters (DOC, alkalinity, pH, temperature, ammonia) on toxin oxidation • Need biofiltrationto follow • Membrane filtration efficiency (ultrafiltration, nanofiltration, reversed osmosis): • Limited information available Algal exopolymer particles (TEP) on a membrane surface

  5. Transport and Fate of Cyanotoxins in Aged Drinking Water Distribution Systems and Building Water Systems YoungwooSeo Scopes • Understand interaction (accumulation and degradation) of cyanotoxins with pipe surface • Develop removal methods at the treatment plant or at local water distribution points • Develop decontamination protocols with hydraulic and water quality modeling • Scaling and bacterial biofilm formation on a corroded pipe • Accumulation and potential degradation of cyanotoxinx

  6. Rain Harvesting Systems:Defne Apul

  7. Detection in Water Samples: Joseph Lawrence, Isabel Escobar • ELISA (Enzyme-Linked ImmunoSorbent Assay) specific immunological assay based on the reaction of all microcystins with antibodies. • Interferences, such as calcium • HPLC (High Performance Liquid Chromatography) separates individual microcystin variables by their absorption spectrogram in a photodiode array detector. • Interferences, such as humics in surface water

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